no it is not and shouldn't. Selling ones last words is body-strapping and a violation of the persons civil liberties.
And the market isn't anywhere, it is a defined area with laws as fences and you don't live in wilderness but in society where we people decided that rules improve life.
Besides, this display of dead people similar to one in Palermo/Italy is macabre and mentally healthy people probably have emotions looking at dead people exhibitions, especially since one doesn't learn anything of it.
I agree that the sale is in bad taste, but I think you go too far there. At the least some people find value in humbling reminders of our own mortality. In that way it is not entirely dissimilar from guided tours of battlefields, camps, etc. The information that you learn during those can be picked up in more 'sterile' books, but that lacks the emotional impact of actually seeing where something happened, or hearing something happen.
Besides, this display of dead people similar to one in Palermo/Italy is macabre and mentally healthy people probably have emotions looking at dead people exhibitions, especially since one doesn't learn anything of it.
In contrast to http://www.bodyworlds.com/en/